TIDUA71 January   2022

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 TAS6584-Q1
      2. 2.3.2 LM5123-Q1
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Results
      1. 3.2.1 Class-H Tracking Waveform Example
      2. 3.2.2 Thermal Performance
  9. 4Design and Documentation Support
    1. 4.1 Design Files
    2. 4.2 Support Resources
    3. 4.3 Trademarks
  10. 5About the Author

2.3.2 LM5123-Q1

The LM5123-Q1 device is a wide input range synchronous boost controller that employs peak current-mode control. The device features a low shutdown IQ and a low IQ sleep mode, which minimizes battery drain at no and light load condition. The device also supports an ultra-low IQ deep-sleep mode with bypass operation, which eliminates the need for an external bypass switch when the supply voltage is greater than the boost output regulation target. The output voltage can be dynamically programmed by using the tracking function.